Home / 66,429,708.40-99,644,562.60-21,005,426.80

Finding the Fourth Proportional to 66,429,708.40, 99,644,562.60 and 21,005,426.80

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Solution

The fourth proportional to 66,429,708.40, 99,644,562.60 and 21,005,426.80 is: 31,508,140.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,429,708.40 : 99,644,562.60 = 21,005,426.80 : x
  2. Step 2: Convert to fraction form
    66,429,708.40/99,644,562.60 = 21,005,426.80/x
  3. Step 3: Cross multiply
    66,429,708.40x = 99,644,562.60 × 21,005,426.80
  4. Step 4: Simplify right side
    66,429,708.40x = 2,093,076,565,712,317.75
  5. Step 5: Solve for x
    x = 2,093,076,565,712,317.75/66,429,708.40
  6. Step 6: Final answer
    x = 31,508,140.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.